Milter-greylist

Jasper Aukes wrote:
 > Hi Oliver,
 > > > > We've implemented milter-greylist at our site last monday and a lot seems to
 > > > > be going well. Unfortunately, sometimes the milter dies when the machine
 > > > > seems to be on heavy load.
 > > > 
 > > > I'm getting the same problem.
 > > 
 > > That sounds like a resource problem.  Are you sure that
 > > your milter-greylist process doesn't hit any resource
 > > limits?  (i.e. data size, number of file descriptors etc.)
 > 
 > The only limits that are set are these two:
 > 
 > descriptors  1024
 > stacksize    8192 kbytes
 > 
 > Should I increase some numbers here? (Not sure how to debug this)

The stacksize shouldn't be a problem, but the descriptors
might be.  You can use a tool like lsof to check how many
descriptors are currently in use.  If the number approaches
your limit during times of heavy load, then you should
definitely increase it.

(Of course, if milter-greylist crashes in such a situation,
then that's a bug.  It should handle the situation more
gracefully.  But maybe sendmail's milter API makes that
difficult, I don't know.)

Best regards
   Oliver

-- 
Oliver Fromme,  secnetix GmbH & Co. KG, Marktplatz 29, 85567 Grafing
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